include/linux/cdrom.h

   1 /*
   2  * -- <linux/cdrom.h>
   3  * General header file for linux CD-ROM drivers
   4  * Copyright (C) 1992         David Giller, rafetmad@oxy.edu
   5  *               1994, 1995   Eberhard Mönkeberg, emoenke@gwdg.de
   6  *               1996         David van Leeuwen, david@tm.tno.nl
   7  *               1997, 1998   Erik Andersen, andersee@debian.org
   8  *               1998-2002    Jens Axboe, axboe@suse.de
   9  */
  10
  11 #ifndef _LINUX_CDROM_H
  12 #define _LINUX_CDROM_H
  13
  14 #include <asm/byteorder.h>
  15
  16 /*******************************************************
  17  * As of Linux 2.1.x, all Linux CD-ROM application programs will use this
  18  * (and only this) include file.  It is my hope to provide Linux with
  19  * a uniform interface between software accessing CD-ROMs and the various
  20  * device drivers that actually talk to the drives.  There may still be
  21  * 23 different kinds of strange CD-ROM drives, but at least there will
  22  * now be one, and only one, Linux CD-ROM interface.
  23  *
  24  * Additionally, as of Linux 2.1.x, all Linux application programs
  25  * should use the O_NONBLOCK option when opening a CD-ROM device
  26  * for subsequent ioctl commands.  This allows for neat system errors
  27  * like "No medium found" or "Wrong medium type" upon attempting to
  28  * mount or play an empty slot, mount an audio disc, or play a data disc.
  29  * Generally, changing an application program to support O_NONBLOCK
  30  * is as easy as the following:
  31  *       -    drive = open("/dev/cdrom", O_RDONLY);
  32  *       +    drive = open("/dev/cdrom", O_RDONLY | O_NONBLOCK);
  33  * It is worth the small change.
  34  *
  35  *  Patches for many common CD programs (provided by David A. van Leeuwen)
  36  *  can be found at:  ftp://ftp.gwdg.de/pub/linux/cdrom/drivers/cm206/
  37  *
  38  *******************************************************/
  39
  40 /* When a driver supports a certain function, but the cdrom drive we are
  41  * using doesn't, we will return the error EDRIVE_CANT_DO_THIS.  We will
  42  * borrow the "Operation not supported" error from the network folks to
  43  * accomplish this.  Maybe someday we will get a more targeted error code,
  44  * but this will do for now... */
  45 #define EDRIVE_CANT_DO_THIS  EOPNOTSUPP
  46
  47 /*******************************************************
  48  * The CD-ROM IOCTL commands  -- these should be supported by
  49  * all the various cdrom drivers.  For the CD-ROM ioctls, we
  50  * will commandeer byte 0x53, or 'S'.
  51  *******************************************************/
  52 #define CDROMPAUSE              0x5301 /* Pause Audio Operation */
  53 #define CDROMRESUME             0x5302 /* Resume paused Audio Operation */
  54 #define CDROMPLAYMSF            0x5303 /* Play Audio MSF (struct cdrom_msf) */
  55 #define CDROMPLAYTRKIND         0x5304 /* Play Audio Track/index
  56                                            (struct cdrom_ti) */
  57 #define CDROMREADTOCHDR         0x5305 /* Read TOC header
  58                                            (struct cdrom_tochdr) */
  59 #define CDROMREADTOCENTRY       0x5306 /* Read TOC entry
  60                                            (struct cdrom_tocentry) */
  61 #define CDROMSTOP               0x5307 /* Stop the cdrom drive */
  62 #define CDROMSTART              0x5308 /* Start the cdrom drive */
  63 #define CDROMEJECT              0x5309 /* Ejects the cdrom media */
  64 #define CDROMVOLCTRL            0x530a /* Control output volume
  65                                            (struct cdrom_volctrl) */
  66 #define CDROMSUBCHNL            0x530b /* Read subchannel data
  67                                            (struct cdrom_subchnl) */
  68 #define CDROMREADMODE2          0x530c /* Read CDROM mode 2 data (2336 Bytes)
  69                                            (struct cdrom_read) */
  70 #define CDROMREADMODE1          0x530d /* Read CDROM mode 1 data (2048 Bytes)
  71                                            (struct cdrom_read) */
  72 #define CDROMREADAUDIO          0x530e /* (struct cdrom_read_audio) */
  73 #define CDROMEJECT_SW           0x530f /* enable(1)/disable(0) auto-ejecting */
  74 #define CDROMMULTISESSION       0x5310 /* Obtain the start-of-last-session
  75                                            address of multi session disks
  76                                            (struct cdrom_multisession) */
  77 #define CDROM_GET_MCN           0x5311 /* Obtain the "Universal Product Code"
  78                                            if available (struct cdrom_mcn) */
  79 #define CDROM_GET_UPC           CDROM_GET_MCN  /* This one is deprecated,
  80                                           but here anyway for compatibility */
  81 #define CDROMRESET              0x5312 /* hard-reset the drive */
  82 #define CDROMVOLREAD            0x5313 /* Get the drive's volume setting
  83                                           (struct cdrom_volctrl) */
  84 #define CDROMREADRAW            0x5314  /* read data in raw mode (2352 Bytes)
  85                                            (struct cdrom_read) */
  86 /*
  87  * These ioctls are used only used in aztcd.c and optcd.c
  88  */
  89 #define CDROMREADCOOKED         0x5315  /* read data in cooked mode */
  90 #define CDROMSEEK               0x5316  /* seek msf address */
  91
  92 /*
  93  * This ioctl is only used by the scsi-cd driver.
  94    It is for playing audio in logical block addressing mode.
  95  */
  96 #define CDROMPLAYBLK            0x5317  /* (struct cdrom_blk) */
  97
  98 /*
  99  * These ioctls are only used in optcd.c
 100  */
 101 #define CDROMREADALL            0x5318  /* read all 2646 bytes */
 102
 103 /*
 104  * These ioctls are (now) only in ide-cd.c for controlling
 105  * drive spindown time.  They should be implemented in the
 106  * Uniform driver, via generic packet commands, GPCMD_MODE_SELECT_10,
 107  * GPCMD_MODE_SENSE_10 and the GPMODE_POWER_PAGE...
 108  *  -Erik
 109  */
 110 #define CDROMGETSPINDOWN        0x531d
 111 #define CDROMSETSPINDOWN        0x531e
 112
 113 /*
 114  * These ioctls are implemented through the uniform CD-ROM driver
 115  * They _will_ be adopted by all CD-ROM drivers, when all the CD-ROM
 116  * drivers are eventually ported to the uniform CD-ROM driver interface.
 117  */
 118 #define CDROMCLOSETRAY          0x5319  /* pendant of CDROMEJECT */
 119 #define CDROM_SET_OPTIONS       0x5320  /* Set behavior options */
 120 #define CDROM_CLEAR_OPTIONS     0x5321  /* Clear behavior options */
 121 #define CDROM_SELECT_SPEED      0x5322  /* Set the CD-ROM speed */
 122 #define CDROM_SELECT_DISC       0x5323  /* Select disc (for juke-boxes) */
 123 #define CDROM_MEDIA_CHANGED     0x5325  /* Check is media changed  */
 124 #define CDROM_DRIVE_STATUS      0x5326  /* Get tray position, etc. */
 125 #define CDROM_DISC_STATUS       0x5327  /* Get disc type, etc. */
 126 #define CDROM_CHANGER_NSLOTS    0x5328  /* Get number of slots */
 127 #define CDROM_LOCKDOOR          0x5329  /* lock or unlock door */
 128 #define CDROM_DEBUG             0x5330  /* Turn debug messages on/off */
 129 #define CDROM_GET_CAPABILITY    0x5331  /* get capabilities */
 130
 131 /* Note that scsi/scsi_ioctl.h also uses 0x5382 - 0x5386.
 132  * Future CDROM ioctls should be kept below 0x537F
 133  */
 134
 135 /* This ioctl is only used by sbpcd at the moment */
 136 #define CDROMAUDIOBUFSIZ        0x5382  /* set the audio buffer size */
 137                                         /* conflict with SCSI_IOCTL_GET_IDLUN */
 138
 139 /* DVD-ROM Specific ioctls */
 140 #define DVD_READ_STRUCT         0x5390  /* Read structure */
 141 #define DVD_WRITE_STRUCT        0x5391  /* Write structure */
 142 #define DVD_AUTH                0x5392  /* Authentication */
 143
 144 #define CDROM_SEND_PACKET       0x5393  /* send a packet to the drive */
 145 #define CDROM_NEXT_WRITABLE     0x5394  /* get next writable block */
 146 #define CDROM_LAST_WRITTEN      0x5395  /* get last block written on disc */
 147
 148 /*******************************************************
 149  * CDROM IOCTL structures
 150  *******************************************************/
 151
 152 /* Address in MSF format */
 153 struct cdrom_msf0
 154 {
 155         __u8    minute;
 156         __u8    second;
 157         __u8    frame;
 158 };
 159
 160 /* Address in either MSF or logical format */
 161 union cdrom_addr
 162 {
 163         struct cdrom_msf0       msf;
 164         int                     lba;
 165 };
 166
 167 /* This struct is used by the CDROMPLAYMSF ioctl */
 168 struct cdrom_msf
 169 {
 170         __u8    cdmsf_min0;     /* start minute */
 171         __u8    cdmsf_sec0;     /* start second */
 172         __u8    cdmsf_frame0;   /* start frame */
 173         __u8    cdmsf_min1;     /* end minute */
 174         __u8    cdmsf_sec1;     /* end second */
 175         __u8    cdmsf_frame1;   /* end frame */
 176 };
 177
 178 /* This struct is used by the CDROMPLAYTRKIND ioctl */
 179 struct cdrom_ti
 180 {
 181         __u8    cdti_trk0;      /* start track */
 182         __u8    cdti_ind0;      /* start index */
 183         __u8    cdti_trk1;      /* end track */
 184         __u8    cdti_ind1;      /* end index */
 185 };
 186
 187 /* This struct is used by the CDROMREADTOCHDR ioctl */
 188 struct cdrom_tochdr
 189 {
 190         __u8    cdth_trk0;      /* start track */
 191         __u8    cdth_trk1;      /* end track */
 192 };
 193
 194 /* This struct is used by the CDROMVOLCTRL and CDROMVOLREAD ioctls */
 195 struct cdrom_volctrl
 196 {
 197         __u8    channel0;
 198         __u8    channel1;
 199         __u8    channel2;
 200         __u8    channel3;
 201 };
 202
 203 /* This struct is used by the CDROMSUBCHNL ioctl */
 204 struct cdrom_subchnl
 205 {
 206         __u8    cdsc_format;
 207         __u8    cdsc_audiostatus;
 208         __u8    cdsc_adr:       4;
 209         __u8    cdsc_ctrl:      4;
 210         __u8    cdsc_trk;
 211         __u8    cdsc_ind;
 212         union cdrom_addr cdsc_absaddr;
 213         union cdrom_addr cdsc_reladdr;
 214 };
 215
 216
 217 /* This struct is used by the CDROMREADTOCENTRY ioctl */
 218 struct cdrom_tocentry
 219 {
 220         __u8    cdte_track;
 221         __u8    cdte_adr        :4;
 222         __u8    cdte_ctrl       :4;
 223         __u8    cdte_format;
 224         union cdrom_addr cdte_addr;
 225         __u8    cdte_datamode;
 226 };
 227
 228 /* This struct is used by the CDROMREADMODE1, and CDROMREADMODE2 ioctls */
 229 struct cdrom_read
 230 {
 231         int     cdread_lba;
 232         char    *cdread_bufaddr;
 233         int     cdread_buflen;
 234 };
 235
 236 /* This struct is used by the CDROMREADAUDIO ioctl */
 237 struct cdrom_read_audio
 238 {
 239         union cdrom_addr addr; /* frame address */
 240         __u8 addr_format;      /* CDROM_LBA or CDROM_MSF */
 241         int nframes;           /* number of 2352-byte-frames to read at once */
 242         __u8 __user *buf;      /* frame buffer (size: nframes*2352 bytes) */
 243 };
 244
 245 /* This struct is used with the CDROMMULTISESSION ioctl */
 246 struct cdrom_multisession
 247 {
 248         union cdrom_addr addr; /* frame address: start-of-last-session
 249                                    (not the new "frame 16"!).  Only valid
 250                                    if the "xa_flag" is true. */
 251         __u8 xa_flag;        /* 1: "is XA disk" */
 252         __u8 addr_format;    /* CDROM_LBA or CDROM_MSF */
 253 };
 254
 255 /* This struct is used with the CDROM_GET_MCN ioctl.
 256  * Very few audio discs actually have Universal Product Code information,
 257  * which should just be the Medium Catalog Number on the box.  Also note
 258  * that the way the codeis written on CD is _not_ uniform across all discs!
 259  */
 260 struct cdrom_mcn
 261 {
 262   __u8 medium_catalog_number[14]; /* 13 ASCII digits, null-terminated */
 263 };
 264
 265 /* This is used by the CDROMPLAYBLK ioctl */
 266 struct cdrom_blk
 267 {
 268         unsigned from;
 269         unsigned short len;
 270 };
 271
 272 #define CDROM_PACKET_SIZE       12
 273
 274 #define CGC_DATA_UNKNOWN        0
 275 #define CGC_DATA_WRITE          1
 276 #define CGC_DATA_READ           2
 277 #define CGC_DATA_NONE           3
 278
 279 /* for CDROM_PACKET_COMMAND ioctl */
 280 struct cdrom_generic_command
 281 {
 282         unsigned char           cmd[CDROM_PACKET_SIZE];
 283         unsigned char           __user *buffer;
 284         unsigned int            buflen;
 285         int                     stat;
 286         struct request_sense    __user *sense;
 287         unsigned char           data_direction;
 288         int                     quiet;
 289         int                     timeout;
 290         void                    __user *reserved[1];    /* unused, actually */
 291 };
 292
 293 /*
 294  * A CD-ROM physical sector size is 2048, 2052, 2056, 2324, 2332, 2336,
 295  * 2340, or 2352 bytes long.
 296
 297 *         Sector types of the standard CD-ROM data formats:
 298  *
 299  * format   sector type               user data size (bytes)
 300  * -----------------------------------------------------------------------------
 301  *   1     (Red Book)    CD-DA          2352    (CD_FRAMESIZE_RAW)
 302  *   2     (Yellow Book) Mode1 Form1    2048    (CD_FRAMESIZE)
 303  *   3     (Yellow Book) Mode1 Form2    2336    (CD_FRAMESIZE_RAW0)
 304  *   4     (Green Book)  Mode2 Form1    2048    (CD_FRAMESIZE)
 305  *   5     (Green Book)  Mode2 Form2    2328    (2324+4 spare bytes)
 306  *
 307  *
 308  *       The layout of the standard CD-ROM data formats:
 309  * -----------------------------------------------------------------------------
 310  * - audio (red):                  | audio_sample_bytes |
 311  *                                 |        2352        |
 312  *
 313  * - data (yellow, mode1):         | sync - head - data - EDC - zero - ECC |
 314  *                                 |  12  -   4  - 2048 -  4  -   8  - 276 |
 315  *
 316  * - data (yellow, mode2):         | sync - head - data |
 317  *                                 |  12  -   4  - 2336 |
 318  *
 319  * - XA data (green, mode2 form1): | sync - head - sub - data - EDC - ECC |
 320  *                                 |  12  -   4  -  8  - 2048 -  4  - 276 |
 321  *
 322  * - XA data (green, mode2 form2): | sync - head - sub - data - Spare |
 323  *                                 |  12  -   4  -  8  - 2324 -  4    |
 324  *
 325  */
 326
 327 /* Some generally useful CD-ROM information -- mostly based on the above */
 328 #define CD_MINS              74 /* max. minutes per CD, not really a limit */
 329 #define CD_SECS              60 /* seconds per minute */
 330 #define CD_FRAMES            75 /* frames per second */
 331 #define CD_SYNC_SIZE         12 /* 12 sync bytes per raw data frame */
 332 #define CD_MSF_OFFSET       150 /* MSF numbering offset of first frame */
 333 #define CD_CHUNK_SIZE        24 /* lowest-level "data bytes piece" */
 334 #define CD_NUM_OF_CHUNKS     98 /* chunks per frame */
 335 #define CD_FRAMESIZE_SUB     96 /* subchannel data "frame" size */
 336 #define CD_HEAD_SIZE          4 /* header (address) bytes per raw data frame */
 337 #define CD_SUBHEAD_SIZE       8 /* subheader bytes per raw XA data frame */
 338 #define CD_EDC_SIZE           4 /* bytes EDC per most raw data frame types */
 339 #define CD_ZERO_SIZE          8 /* bytes zero per yellow book mode 1 frame */
 340 #define CD_ECC_SIZE         276 /* bytes ECC per most raw data frame types */
 341 #define CD_FRAMESIZE       2048 /* bytes per frame, "cooked" mode */
 342 #define CD_FRAMESIZE_RAW   2352 /* bytes per frame, "raw" mode */
 343 #define CD_FRAMESIZE_RAWER 2646 /* The maximum possible returned bytes */
 344 /* most drives don't deliver everything: */
 345 #define CD_FRAMESIZE_RAW1 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE) /*2340*/
 346 #define CD_FRAMESIZE_RAW0 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE-CD_HEAD_SIZE) /*2336*/
 347
 348 #define CD_XA_HEAD        (CD_HEAD_SIZE+CD_SUBHEAD_SIZE) /* "before data" part of raw XA frame */
 349 #define CD_XA_TAIL        (CD_EDC_SIZE+CD_ECC_SIZE) /* "after data" part of raw XA frame */
 350 #define CD_XA_SYNC_HEAD   (CD_SYNC_SIZE+CD_XA_HEAD) /* sync bytes + header of XA frame */
 351
 352 /* CD-ROM address types (cdrom_tocentry.cdte_format) */
 353 #define CDROM_LBA 0x01 /* "logical block": first frame is #0 */
 354 #define CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */
 355
 356 /* bit to tell whether track is data or audio (cdrom_tocentry.cdte_ctrl) */
 357 #define CDROM_DATA_TRACK        0x04
 358
 359 /* The leadout track is always 0xAA, regardless of # of tracks on disc */
 360 #define CDROM_LEADOUT           0xAA
 361
 362 /* audio states (from SCSI-2, but seen with other drives, too) */
 363 #define CDROM_AUDIO_INVALID     0x00    /* audio status not supported */
 364 #define CDROM_AUDIO_PLAY        0x11    /* audio play operation in progress */
 365 #define CDROM_AUDIO_PAUSED      0x12    /* audio play operation paused */
 366 #define CDROM_AUDIO_COMPLETED   0x13    /* audio play successfully completed */
 367 #define CDROM_AUDIO_ERROR       0x14    /* audio play stopped due to error */
 368 #define CDROM_AUDIO_NO_STATUS   0x15    /* no current audio status to return */
 369
 370 /* capability flags used with the uniform CD-ROM driver */
 371 #define CDC_CLOSE_TRAY          0x1     /* caddy systems _can't_ close */
 372 #define CDC_OPEN_TRAY           0x2     /* but _can_ eject.  */
 373 #define CDC_LOCK                0x4     /* disable manual eject */
 374 #define CDC_SELECT_SPEED        0x8     /* programmable speed */
 375 #define CDC_SELECT_DISC         0x10    /* select disc from juke-box */
 376 #define CDC_MULTI_SESSION       0x20    /* read sessions>1 */
 377 #define CDC_MCN                 0x40    /* Medium Catalog Number */
 378 #define CDC_MEDIA_CHANGED       0x80    /* media changed */
 379 #define CDC_PLAY_AUDIO          0x100   /* audio functions */
 380 #define CDC_RESET               0x200   /* hard reset device */
 381 #define CDC_DRIVE_STATUS        0x800   /* driver implements drive status */
 382 #define CDC_GENERIC_PACKET      0x1000  /* driver implements generic packets */
 383 #define CDC_CD_R                0x2000  /* drive is a CD-R */
 384 #define CDC_CD_RW               0x4000  /* drive is a CD-RW */
 385 #define CDC_DVD                 0x8000  /* drive is a DVD */
 386 #define CDC_DVD_R               0x10000 /* drive can write DVD-R */
 387 #define CDC_DVD_RAM             0x20000 /* drive can write DVD-RAM */
 388 #define CDC_MO_DRIVE            0x40000 /* drive is an MO device */
 389 #define CDC_MRW                 0x80000 /* drive can read MRW */
 390 #define CDC_MRW_W               0x100000 /* drive can write MRW */
 391 #define CDC_RAM                 0x200000 /* ok to open for WRITE */
 392
 393 /* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */
 394 #define CDS_NO_INFO             0       /* if not implemented */
 395 #define CDS_NO_DISC             1
 396 #define CDS_TRAY_OPEN           2
 397 #define CDS_DRIVE_NOT_READY     3
 398 #define CDS_DISC_OK             4
 399
 400 /* return values for the CDROM_DISC_STATUS ioctl */
 401 /* can also return CDS_NO_[INFO|DISC], from above */
 402 #define CDS_AUDIO               100
 403 #define CDS_DATA_1              101
 404 #define CDS_DATA_2              102
 405 #define CDS_XA_2_1              103
 406 #define CDS_XA_2_2              104
 407 #define CDS_MIXED               105
 408
 409 /* User-configurable behavior options for the uniform CD-ROM driver */
 410 #define CDO_AUTO_CLOSE          0x1     /* close tray on first open() */
 411 #define CDO_AUTO_EJECT          0x2     /* open tray on last release() */
 412 #define CDO_USE_FFLAGS          0x4     /* use O_NONBLOCK information on open */
 413 #define CDO_LOCK                0x8     /* lock tray on open files */
 414 #define CDO_CHECK_TYPE          0x10    /* check type on open for data */
 415
 416 /* Special codes used when specifying changer slots. */
 417 #define CDSL_NONE               (INT_MAX-1)
 418 #define CDSL_CURRENT            INT_MAX
 419
 420 /* For partition based multisession access. IDE can handle 64 partitions
 421  * per drive - SCSI CD-ROM's use minors to differentiate between the
 422  * various drives, so we can't do multisessions the same way there.
 423  * Use the -o session=x option to mount on them.
 424  */
 425 #define CD_PART_MAX             64
 426 #define CD_PART_MASK            (CD_PART_MAX - 1)
 427
 428 /*********************************************************************
 429  * Generic Packet commands, MMC commands, and such
 430  *********************************************************************/
 431
 432  /* The generic packet command opcodes for CD/DVD Logical Units,
 433  * From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */
 434 #define GPCMD_BLANK                         0xa1
 435 #define GPCMD_CLOSE_TRACK                   0x5b
 436 #define GPCMD_FLUSH_CACHE                   0x35
 437 #define GPCMD_FORMAT_UNIT                   0x04
 438 #define GPCMD_GET_CONFIGURATION             0x46
 439 #define GPCMD_GET_EVENT_STATUS_NOTIFICATION 0x4a
 440 #define GPCMD_GET_PERFORMANCE               0xac
 441 #define GPCMD_INQUIRY                       0x12
 442 #define GPCMD_LOAD_UNLOAD                   0xa6
 443 #define GPCMD_MECHANISM_STATUS              0xbd
 444 #define GPCMD_MODE_SELECT_10                0x55
 445 #define GPCMD_MODE_SENSE_10                 0x5a
 446 #define GPCMD_PAUSE_RESUME                  0x4b
 447 #define GPCMD_PLAY_AUDIO_10                 0x45
 448 #define GPCMD_PLAY_AUDIO_MSF                0x47
 449 #define GPCMD_PLAY_AUDIO_TI                 0x48
 450 #define GPCMD_PLAY_CD                       0xbc
 451 #define GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL  0x1e
 452 #define GPCMD_READ_10                       0x28
 453 #define GPCMD_READ_12                       0xa8
 454 #define GPCMD_READ_BUFFER                   0x3c
 455 #define GPCMD_READ_BUFFER_CAPACITY          0x5c
 456 #define GPCMD_READ_CDVD_CAPACITY            0x25
 457 #define GPCMD_READ_CD                       0xbe
 458 #define GPCMD_READ_CD_MSF                   0xb9
 459 #define GPCMD_READ_DISC_INFO                0x51
 460 #define GPCMD_READ_DVD_STRUCTURE            0xad
 461 #define GPCMD_READ_FORMAT_CAPACITIES        0x23
 462 #define GPCMD_READ_HEADER                   0x44
 463 #define GPCMD_READ_TRACK_RZONE_INFO         0x52
 464 #define GPCMD_READ_SUBCHANNEL               0x42
 465 #define GPCMD_READ_TOC_PMA_ATIP             0x43
 466 #define GPCMD_REPAIR_RZONE_TRACK            0x58
 467 #define GPCMD_REPORT_KEY                    0xa4
 468 #define GPCMD_REQUEST_SENSE                 0x03
 469 #define GPCMD_RESERVE_RZONE_TRACK           0x53
 470 #define GPCMD_SEND_CUE_SHEET                0x5d
 471 #define GPCMD_SCAN                          0xba
 472 #define GPCMD_SEEK                          0x2b
 473 #define GPCMD_SEND_DVD_STRUCTURE            0xbf
 474 #define GPCMD_SEND_EVENT                    0xa2
 475 #define GPCMD_SEND_KEY                      0xa3
 476 #define GPCMD_SEND_OPC                      0x54
 477 #define GPCMD_SET_READ_AHEAD                0xa7
 478 #define GPCMD_SET_STREAMING                 0xb6
 479 #define GPCMD_START_STOP_UNIT               0x1b
 480 #define GPCMD_STOP_PLAY_SCAN                0x4e
 481 #define GPCMD_TEST_UNIT_READY               0x00
 482 #define GPCMD_VERIFY_10                     0x2f
 483 #define GPCMD_WRITE_10                      0x2a
 484 #define GPCMD_WRITE_12                      0xaa
 485 #define GPCMD_WRITE_AND_VERIFY_10           0x2e
 486 #define GPCMD_WRITE_BUFFER                  0x3b
 487 /* This is listed as optional in ATAPI 2.6, but is (curiously)
 488  * missing from Mt. Fuji, Table 57.  It _is_ mentioned in Mt. Fuji
 489  * Table 377 as an MMC command for SCSi devices though...  Most ATAPI
 490  * drives support it. */
 491 #define GPCMD_SET_SPEED                     0xbb
 492 /* This seems to be a SCSI specific CD-ROM opcode
 493  * to play data at track/index */
 494 #define GPCMD_PLAYAUDIO_TI                  0x48
 495 /*
 496  * From MS Media Status Notification Support Specification. For
 497  * older drives only.
 498  */
 499 #define GPCMD_GET_MEDIA_STATUS              0xda
 500
 501 /* Mode page codes for mode sense/set */
 502 #define GPMODE_VENDOR_PAGE              0x00
 503 #define GPMODE_R_W_ERROR_PAGE           0x01
 504 #define GPMODE_WRITE_PARMS_PAGE         0x05
 505 #define GPMODE_WCACHING_PAGE            0x08
 506 #define GPMODE_AUDIO_CTL_PAGE           0x0e
 507 #define GPMODE_POWER_PAGE               0x1a
 508 #define GPMODE_FAULT_FAIL_PAGE          0x1c
 509 #define GPMODE_TO_PROTECT_PAGE          0x1d
 510 #define GPMODE_CAPABILITIES_PAGE        0x2a
 511 #define GPMODE_ALL_PAGES                0x3f
 512 /* Not in Mt. Fuji, but in ATAPI 2.6 -- deprecated now in favor
 513  * of MODE_SENSE_POWER_PAGE */
 514 #define GPMODE_CDROM_PAGE               0x0d
 515
 516
 517
 518 /* DVD struct types */
 519 #define DVD_STRUCT_PHYSICAL     0x00
 520 #define DVD_STRUCT_COPYRIGHT    0x01
 521 #define DVD_STRUCT_DISCKEY      0x02
 522 #define DVD_STRUCT_BCA          0x03
 523 #define DVD_STRUCT_MANUFACT     0x04
 524
 525 struct dvd_layer {
 526         __u8 book_version       : 4;
 527         __u8 book_type          : 4;
 528         __u8 min_rate           : 4;
 529         __u8 disc_size          : 4;
 530         __u8 layer_type         : 4;
 531         __u8 track_path         : 1;
 532         __u8 nlayers            : 2;
 533         __u8 track_density      : 4;
 534         __u8 linear_density     : 4;
 535         __u8 bca                : 1;
 536         __u32 start_sector;
 537         __u32 end_sector;
 538         __u32 end_sector_l0;
 539 };
 540
 541 #define DVD_LAYERS      4
 542
 543 struct dvd_physical {
 544         __u8 type;
 545         __u8 layer_num;
 546         struct dvd_layer layer[DVD_LAYERS];
 547 };
 548
 549 struct dvd_copyright {
 550         __u8 type;
 551
 552         __u8 layer_num;
 553         __u8 cpst;
 554         __u8 rmi;
 555 };
 556
 557 struct dvd_disckey {
 558         __u8 type;
 559
 560         unsigned agid           : 2;
 561         __u8 value[2048];
 562 };
 563
 564 struct dvd_bca {
 565         __u8 type;
 566
 567         int len;
 568         __u8 value[188];
 569 };
 570
 571 struct dvd_manufact {
 572         __u8 type;
 573
 574         __u8 layer_num;
 575         int len;
 576         __u8 value[2048];
 577 };
 578
 579 typedef union {
 580         __u8 type;
 581
 582         struct dvd_physical     physical;
 583         struct dvd_copyright    copyright;
 584         struct dvd_disckey      disckey;
 585         struct dvd_bca          bca;
 586         struct dvd_manufact     manufact;
 587 } dvd_struct;
 588
 589 /*
 590  * DVD authentication ioctl
 591  */
 592
 593 /* Authentication states */
 594 #define DVD_LU_SEND_AGID        0
 595 #define DVD_HOST_SEND_CHALLENGE 1
 596 #define DVD_LU_SEND_KEY1        2
 597 #define DVD_LU_SEND_CHALLENGE   3
 598 #define DVD_HOST_SEND_KEY2      4
 599
 600 /* Termination states */
 601 #define DVD_AUTH_ESTABLISHED    5
 602 #define DVD_AUTH_FAILURE        6
 603
 604 /* Other functions */
 605 #define DVD_LU_SEND_TITLE_KEY   7
 606 #define DVD_LU_SEND_ASF         8
 607 #define DVD_INVALIDATE_AGID     9
 608 #define DVD_LU_SEND_RPC_STATE   10
 609 #define DVD_HOST_SEND_RPC_STATE 11
 610
 611 /* State data */
 612 typedef __u8 dvd_key[5];                /* 40-bit value, MSB is first elem. */
 613 typedef __u8 dvd_challenge[10]; /* 80-bit value, MSB is first elem. */
 614
 615 struct dvd_lu_send_agid {
 616         __u8 type;
 617         unsigned agid           : 2;
 618 };
 619
 620 struct dvd_host_send_challenge {
 621         __u8 type;
 622         unsigned agid           : 2;
 623
 624         dvd_challenge chal;
 625 };
 626
 627 struct dvd_send_key {
 628         __u8 type;
 629         unsigned agid           : 2;
 630
 631         dvd_key key;
 632 };
 633
 634 struct dvd_lu_send_challenge {
 635         __u8 type;
 636         unsigned agid           : 2;
 637
 638         dvd_challenge chal;
 639 };
 640
 641 #define DVD_CPM_NO_COPYRIGHT    0
 642 #define DVD_CPM_COPYRIGHTED     1
 643
 644 #define DVD_CP_SEC_NONE         0
 645 #define DVD_CP_SEC_EXIST        1
 646
 647 #define DVD_CGMS_UNRESTRICTED   0
 648 #define DVD_CGMS_SINGLE         2
 649 #define DVD_CGMS_RESTRICTED     3
 650
 651 struct dvd_lu_send_title_key {
 652         __u8 type;
 653         unsigned agid           : 2;
 654
 655         dvd_key title_key;
 656         int lba;
 657         unsigned cpm            : 1;
 658         unsigned cp_sec         : 1;
 659         unsigned cgms           : 2;
 660 };
 661
 662 struct dvd_lu_send_asf {
 663         __u8 type;
 664         unsigned agid           : 2;
 665
 666         unsigned asf            : 1;
 667 };
 668
 669 struct dvd_host_send_rpcstate {
 670         __u8 type;
 671         __u8 pdrc;
 672 };
 673
 674 struct dvd_lu_send_rpcstate {
 675         __u8 type               : 2;
 676         __u8 vra                : 3;
 677         __u8 ucca               : 3;
 678         __u8 region_mask;
 679         __u8 rpc_scheme;
 680 };
 681
 682 typedef union {
 683         __u8 type;
 684
 685         struct dvd_lu_send_agid         lsa;
 686         struct dvd_host_send_challenge  hsc;
 687         struct dvd_send_key             lsk;
 688         struct dvd_lu_send_challenge    lsc;
 689         struct dvd_send_key             hsk;
 690         struct dvd_lu_send_title_key    lstk;
 691         struct dvd_lu_send_asf          lsasf;
 692         struct dvd_host_send_rpcstate   hrpcs;
 693         struct dvd_lu_send_rpcstate     lrpcs;
 694 } dvd_authinfo;
 695
 696 struct request_sense {
 697 #if defined(__BIG_ENDIAN_BITFIELD)
 698         __u8 valid              : 1;
 699         __u8 error_code         : 7;
 700 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 701         __u8 error_code         : 7;
 702         __u8 valid              : 1;
 703 #endif
 704         __u8 segment_number;
 705 #if defined(__BIG_ENDIAN_BITFIELD)
 706         __u8 reserved1          : 2;
 707         __u8 ili                : 1;
 708         __u8 reserved2          : 1;
 709         __u8 sense_key          : 4;
 710 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 711         __u8 sense_key          : 4;
 712         __u8 reserved2          : 1;
 713         __u8 ili                : 1;
 714         __u8 reserved1          : 2;
 715 #endif
 716         __u8 information[4];
 717         __u8 add_sense_len;
 718         __u8 command_info[4];
 719         __u8 asc;
 720         __u8 ascq;
 721         __u8 fruc;
 722         __u8 sks[3];
 723         __u8 asb[46];
 724 };
 725
 726 /*
 727  * feature profile
 728  */
 729 #define CDF_RWRT        0x0020  /* "Random Writable" */
 730 #define CDF_HWDM        0x0024  /* "Hardware Defect Management" */
 731 #define CDF_MRW         0x0028
 732
 733 /*
 734  * media status bits
 735  */
 736 #define CDM_MRW_NOTMRW                  0
 737 #define CDM_MRW_BGFORMAT_INACTIVE       1
 738 #define CDM_MRW_BGFORMAT_ACTIVE         2
 739 #define CDM_MRW_BGFORMAT_COMPLETE       3
 740
 741 /*
 742  * mrw address spaces
 743  */
 744 #define MRW_LBA_DMA                     0
 745 #define MRW_LBA_GAA                     1
 746
 747 /*
 748  * mrw mode pages (first is deprecated) -- probed at init time and
 749  * cdi->mrw_mode_page is set
 750  */
 751 #define MRW_MODE_PC_PRE1                0x2c
 752 #define MRW_MODE_PC                     0x03
 753
 754 struct mrw_feature_desc {
 755         __be16 feature_code;
 756 #if defined(__BIG_ENDIAN_BITFIELD)
 757         __u8 reserved1          : 2;
 758         __u8 feature_version    : 4;
 759         __u8 persistent         : 1;
 760         __u8 curr               : 1;
 761 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 762         __u8 curr               : 1;
 763         __u8 persistent         : 1;
 764         __u8 feature_version    : 4;
 765         __u8 reserved1          : 2;
 766 #endif
 767         __u8 add_len;
 768 #if defined(__BIG_ENDIAN_BITFIELD)
 769         __u8 reserved2          : 7;
 770         __u8 write              : 1;
 771 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 772         __u8 write              : 1;
 773         __u8 reserved2          : 7;
 774 #endif
 775         __u8 reserved3;
 776         __u8 reserved4;
 777         __u8 reserved5;
 778 };
 779
 780 /* cf. mmc4r02g.pdf 5.3.10 Random Writable Feature (0020h) pg 197 of 635 */
 781 struct rwrt_feature_desc {
 782         __be16 feature_code;
 783 #if defined(__BIG_ENDIAN_BITFIELD)
 784         __u8 reserved1          : 2;
 785         __u8 feature_version    : 4;
 786         __u8 persistent         : 1;
 787         __u8 curr               : 1;
 788 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 789         __u8 curr               : 1;
 790         __u8 persistent         : 1;
 791         __u8 feature_version    : 4;
 792         __u8 reserved1          : 2;
 793 #endif
 794         __u8 add_len;
 795         __u32 last_lba;
 796         __u32 block_size;
 797         __u16 blocking;
 798 #if defined(__BIG_ENDIAN_BITFIELD)
 799         __u8 reserved2          : 7;
 800         __u8 page_present       : 1;
 801 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 802         __u8 page_present       : 1;
 803         __u8 reserved2          : 7;
 804 #endif
 805         __u8 reserved3;
 806 };
 807
 808 typedef struct {
 809         __be16 disc_information_length;
 810 #if defined(__BIG_ENDIAN_BITFIELD)
 811         __u8 reserved1                  : 3;
 812         __u8 erasable                   : 1;
 813         __u8 border_status              : 2;
 814         __u8 disc_status                : 2;
 815 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 816         __u8 disc_status                : 2;
 817         __u8 border_status              : 2;
 818         __u8 erasable                   : 1;
 819         __u8 reserved1                  : 3;
 820 #else
 821 #error "Please fix <asm/byteorder.h>"
 822 #endif
 823         __u8 n_first_track;
 824         __u8 n_sessions_lsb;
 825         __u8 first_track_lsb;
 826         __u8 last_track_lsb;
 827 #if defined(__BIG_ENDIAN_BITFIELD)
 828         __u8 did_v                      : 1;
 829         __u8 dbc_v                      : 1;
 830         __u8 uru                        : 1;
 831         __u8 reserved2                  : 2;
 832         __u8 dbit                       : 1;
 833         __u8 mrw_status                 : 2;
 834 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 835         __u8 mrw_status                 : 2;
 836         __u8 dbit                       : 1;
 837         __u8 reserved2                  : 2;
 838         __u8 uru                        : 1;
 839         __u8 dbc_v                      : 1;
 840         __u8 did_v                      : 1;
 841 #endif
 842         __u8 disc_type;
 843         __u8 n_sessions_msb;
 844         __u8 first_track_msb;
 845         __u8 last_track_msb;
 846         __u32 disc_id;
 847         __u32 lead_in;
 848         __u32 lead_out;
 849         __u8 disc_bar_code[8];
 850         __u8 reserved3;
 851         __u8 n_opc;
 852 } disc_information;
 853
 854 typedef struct {
 855         __be16 track_information_length;
 856         __u8 track_lsb;
 857         __u8 session_lsb;
 858         __u8 reserved1;
 859 #if defined(__BIG_ENDIAN_BITFIELD)
 860         __u8 reserved2                  : 2;
 861         __u8 damage                     : 1;
 862         __u8 copy                       : 1;
 863         __u8 track_mode                 : 4;
 864         __u8 rt                         : 1;
 865         __u8 blank                      : 1;
 866         __u8 packet                     : 1;
 867         __u8 fp                         : 1;
 868         __u8 data_mode                  : 4;
 869         __u8 reserved3                  : 6;
 870         __u8 lra_v                      : 1;
 871         __u8 nwa_v                      : 1;
 872 #elif defined(__LITTLE_ENDIAN_BITFIELD)
 873         __u8 track_mode                 : 4;
 874         __u8 copy                       : 1;
 875         __u8 damage                     : 1;
 876         __u8 reserved2                  : 2;
 877         __u8 data_mode                  : 4;
 878         __u8 fp                         : 1;
 879         __u8 packet                     : 1;
 880         __u8 blank                      : 1;
 881         __u8 rt                         : 1;
 882         __u8 nwa_v                      : 1;
 883         __u8 lra_v                      : 1;
 884         __u8 reserved3                  : 6;
 885 #endif
 886         __be32 track_start;
 887         __be32 next_writable;
 888         __be32 free_blocks;
 889         __be32 fixed_packet_size;
 890         __be32 track_size;
 891         __be32 last_rec_address;
 892 } track_information;
 893
 894 struct feature_header {
 895         __u32 data_len;
 896         __u8 reserved1;
 897         __u8 reserved2;
 898         __u16 curr_profile;
 899 };
 900
 901 struct mode_page_header {
 902         __be16 mode_data_length;
 903         __u8 medium_type;
 904         __u8 reserved1;
 905         __u8 reserved2;
 906         __u8 reserved3;
 907         __be16 desc_length;
 908 };
 909
 910 #ifdef __KERNEL__
 911 #include <linux/fs.h>           /* not really needed, later.. */
 912 #include <linux/device.h>
 913
 914 struct packet_command
 915 {
 916         unsigned char           cmd[CDROM_PACKET_SIZE];
 917         unsigned char           *buffer;
 918         unsigned int            buflen;
 919         int                     stat;
 920         struct request_sense    *sense;
 921         unsigned char           data_direction;
 922         int                     quiet;
 923         int                     timeout;
 924         void                    *reserved[1];
 925 };
 926
 927 /*
 928  * _OLD will use PIO transfer on atapi devices, _BPC_* will use DMA
 929  */
 930 #define CDDA_OLD                0       /* old style */
 931 #define CDDA_BPC_SINGLE         1       /* single frame block pc */
 932 #define CDDA_BPC_FULL           2       /* multi frame block pc */
 933
 934 /* Uniform cdrom data structures for cdrom.c */
 935 struct cdrom_device_info {
 936         struct cdrom_device_ops  *ops;  /* link to device_ops */
 937         struct cdrom_device_info *next; /* next device_info for this major */
 938         struct gendisk *disk;           /* matching block layer disk */
 939         void *handle;                   /* driver-dependent data */
 940 /* specifications */
 941         int mask;                       /* mask of capability: disables them */
 942         int speed;                      /* maximum speed for reading data */
 943         int capacity;                   /* number of discs in jukebox */
 944 /* device-related storage */
 945         unsigned int options    : 30;   /* options flags */
 946         unsigned mc_flags       : 2;    /* media change buffer flags */
 947         int use_count;                  /* number of times device opened */
 948         char name[20];                  /* name of the device type */
 949 /* per-device flags */
 950         __u8 sanyo_slot         : 2;    /* Sanyo 3 CD changer support */
 951         __u8 reserved           : 6;    /* not used yet */
 952         int cdda_method;                /* see flags */
 953         __u8 last_sense;
 954         __u8 media_written;             /* dirty flag, DVD+RW bookkeeping */
 955         unsigned short mmc3_profile;    /* current MMC3 profile */
 956         int for_data;
 957         int (*exit)(struct cdrom_device_info *);
 958         int mrw_mode_page;
 959 };
 960
 961 struct cdrom_device_ops {
 962 /* routines */
 963         int (*open) (struct cdrom_device_info *, int);
 964         void (*release) (struct cdrom_device_info *);
 965         int (*drive_status) (struct cdrom_device_info *, int);
 966         int (*media_changed) (struct cdrom_device_info *, int);
 967         int (*tray_move) (struct cdrom_device_info *, int);
 968         int (*lock_door) (struct cdrom_device_info *, int);
 969         int (*select_speed) (struct cdrom_device_info *, int);
 970         int (*select_disc) (struct cdrom_device_info *, int);
 971         int (*get_last_session) (struct cdrom_device_info *,
 972                                  struct cdrom_multisession *);
 973         int (*get_mcn) (struct cdrom_device_info *,
 974                         struct cdrom_mcn *);
 975         /* hard reset device */
 976         int (*reset) (struct cdrom_device_info *);
 977         /* play stuff */
 978         int (*audio_ioctl) (struct cdrom_device_info *,unsigned int, void *);
 979
 980 /* driver specifications */
 981         const int capability;   /* capability flags */
 982         int n_minors;           /* number of active minor devices */
 983         /* handle uniform packets for scsi type devices (scsi,atapi) */
 984         int (*generic_packet) (struct cdrom_device_info *,
 985                                struct packet_command *);
 986 };
 987
 988 /* the general block_device operations structure: */
 989 extern int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip,
 990                         struct file *fp);
 991 extern int cdrom_release(struct cdrom_device_info *cdi, struct file *fp);
 992 extern int cdrom_ioctl(struct file *file, struct cdrom_device_info *cdi,
 993                 struct inode *ip, unsigned int cmd, unsigned long arg);
 994 extern int cdrom_media_changed(struct cdrom_device_info *);
 995
 996 extern int register_cdrom(struct cdrom_device_info *cdi);
 997 extern int unregister_cdrom(struct cdrom_device_info *cdi);
 998
 999 typedef struct {
1000     int data;
1001     int audio;
1002     int cdi;
1003     int xa;
1004     long error;
1005 } tracktype;
1006
1007 extern int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written);
1008 extern int cdrom_number_of_slots(struct cdrom_device_info *cdi);
1009 extern int cdrom_mode_select(struct cdrom_device_info *cdi,
1010                              struct packet_command *cgc);
1011 extern int cdrom_mode_sense(struct cdrom_device_info *cdi,
1012                             struct packet_command *cgc,
1013                             int page_code, int page_control);
1014 extern void init_cdrom_command(struct packet_command *cgc,
1015                                void *buffer, int len, int type);
1016
1017 /* The SCSI spec says there could be 256 slots. */
1018 #define CDROM_MAX_SLOTS 256
1019
1020 struct cdrom_mechstat_header {
1021 #if defined(__BIG_ENDIAN_BITFIELD)
1022         __u8 fault         : 1;
1023         __u8 changer_state : 2;
1024         __u8 curslot       : 5;
1025         __u8 mech_state    : 3;
1026         __u8 door_open     : 1;
1027         __u8 reserved1     : 4;
1028 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1029         __u8 curslot       : 5;
1030         __u8 changer_state : 2;
1031         __u8 fault         : 1;
1032         __u8 reserved1     : 4;
1033         __u8 door_open     : 1;
1034         __u8 mech_state    : 3;
1035 #endif
1036         __u8     curlba[3];
1037         __u8     nslots;
1038         __u16 slot_tablelen;
1039 };
1040
1041 struct cdrom_slot {
1042 #if defined(__BIG_ENDIAN_BITFIELD)
1043         __u8 disc_present : 1;
1044         __u8 reserved1    : 6;
1045         __u8 change       : 1;
1046 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1047         __u8 change       : 1;
1048         __u8 reserved1    : 6;
1049         __u8 disc_present : 1;
1050 #endif
1051         __u8 reserved2[3];
1052 };
1053
1054 struct cdrom_changer_info {
1055         struct cdrom_mechstat_header hdr;
1056         struct cdrom_slot slots[CDROM_MAX_SLOTS];
1057 };
1058
1059 typedef enum {
1060         mechtype_caddy = 0,
1061         mechtype_tray  = 1,
1062         mechtype_popup = 2,
1063         mechtype_individual_changer = 4,
1064         mechtype_cartridge_changer  = 5
1065 } mechtype_t;
1066
1067 typedef struct {
1068 #if defined(__BIG_ENDIAN_BITFIELD)
1069         __u8 ps                 : 1;
1070         __u8 reserved1          : 1;
1071         __u8 page_code          : 6;
1072         __u8 page_length;
1073         __u8 reserved2          : 1;
1074         __u8 bufe               : 1;
1075         __u8 ls_v               : 1;
1076         __u8 test_write         : 1;
1077         __u8 write_type         : 4;
1078         __u8 multi_session      : 2; /* or border, DVD */
1079         __u8 fp                 : 1;
1080         __u8 copy               : 1;
1081         __u8 track_mode         : 4;
1082         __u8 reserved3          : 4;
1083         __u8 data_block_type    : 4;
1084 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1085         __u8 page_code          : 6;
1086         __u8 reserved1          : 1;
1087         __u8 ps                 : 1;
1088         __u8 page_length;
1089         __u8 write_type         : 4;
1090         __u8 test_write         : 1;
1091         __u8 ls_v               : 1;
1092         __u8 bufe               : 1;
1093         __u8 reserved2          : 1;
1094         __u8 track_mode         : 4;
1095         __u8 copy               : 1;
1096         __u8 fp                 : 1;
1097         __u8 multi_session      : 2; /* or border, DVD */
1098         __u8 data_block_type    : 4;
1099         __u8 reserved3          : 4;
1100 #endif
1101         __u8 link_size;
1102         __u8 reserved4;
1103 #if defined(__BIG_ENDIAN_BITFIELD)
1104         __u8 reserved5          : 2;
1105         __u8 app_code           : 6;
1106 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1107         __u8 app_code           : 6;
1108         __u8 reserved5          : 2;
1109 #endif
1110         __u8 session_format;
1111         __u8 reserved6;
1112         __be32 packet_size;
1113         __u16 audio_pause;
1114         __u8 mcn[16];
1115         __u8 isrc[16];
1116         __u8 subhdr0;
1117         __u8 subhdr1;
1118         __u8 subhdr2;
1119         __u8 subhdr3;
1120 } __attribute__((packed)) write_param_page;
1121
1122 struct modesel_head
1123 {
1124         __u8    reserved1;
1125         __u8    medium;
1126         __u8    reserved2;
1127         __u8    block_desc_length;
1128         __u8    density;
1129         __u8    number_of_blocks_hi;
1130         __u8    number_of_blocks_med;
1131         __u8    number_of_blocks_lo;
1132         __u8    reserved3;
1133         __u8    block_length_hi;
1134         __u8    block_length_med;
1135         __u8    block_length_lo;
1136 };
1137
1138 typedef struct {
1139         __u16 report_key_length;
1140         __u8 reserved1;
1141         __u8 reserved2;
1142 #if defined(__BIG_ENDIAN_BITFIELD)
1143         __u8 type_code                  : 2;
1144         __u8 vra                        : 3;
1145         __u8 ucca                       : 3;
1146 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1147         __u8 ucca                       : 3;
1148         __u8 vra                        : 3;
1149         __u8 type_code                  : 2;
1150 #endif
1151         __u8 region_mask;
1152         __u8 rpc_scheme;
1153         __u8 reserved3;
1154 } rpc_state_t;
1155
1156 struct event_header {
1157         __be16 data_len;
1158 #if defined(__BIG_ENDIAN_BITFIELD)
1159         __u8 nea                : 1;
1160         __u8 reserved1          : 4;
1161         __u8 notification_class : 3;
1162 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1163         __u8 notification_class : 3;
1164         __u8 reserved1          : 4;
1165         __u8 nea                : 1;
1166 #endif
1167         __u8 supp_event_class;
1168 };
1169
1170 struct media_event_desc {
1171 #if defined(__BIG_ENDIAN_BITFIELD)
1172         __u8 reserved1          : 4;
1173         __u8 media_event_code   : 4;
1174         __u8 reserved2          : 6;
1175         __u8 media_present      : 1;
1176         __u8 door_open          : 1;
1177 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1178         __u8 media_event_code   : 4;
1179         __u8 reserved1          : 4;
1180         __u8 door_open          : 1;
1181         __u8 media_present      : 1;
1182         __u8 reserved2          : 6;
1183 #endif
1184         __u8 start_slot;
1185         __u8 end_slot;
1186 };
1187
1188 extern int cdrom_get_media_event(struct cdrom_device_info *cdi, struct media_event_desc *med);
1189
1190 #endif  /* End of kernel only stuff */
1191
1192 #endif  /* _LINUX_CDROM_H */